Grease-cup.



G. W. BOWEN.

GREASE CUP.

APPLICATION FILED AUG. 7, 1911.

Patented Apr.'30, 1912.

h I I 15 WITNESSES: jaw 63 gm 7 ATTORNEYS GEORGE W. BOWEN, OF AUBURN,NEW YORK.

GREASE-CUP.

Application filed August 7,

To all whom it may. concern:

Be it known. that I, GEORGE W. BOWEN, of

Auburn, in the county of Cayuga and Stateof New York, have invented anew and useful Grease-Cup, of which the following is a specification.

My invention has for its object the production of a grease cup which isparticularly simple in construction, and highly eflicient and durable inuse; and it consists in the combinations and constructions hereinafterset forth and claimed.

In describing this invention reference is had to the accompanyingdrawing in which like characters designate corresponding parts in allthe views.

Figure 1 IS a vertical sectional view of a preferable form of myinvention. Fig. 2 is a horizontal sectional View on line AA?, Fig. 1.Figs. 3 and 4 are plans of the lower and upper disk members of theplunger.

This grease cup comprises, generally, a recup comprises a base, and aclosure or cap 'of the base 1.

connected by screw threadsto the base, and the plunger and the operatingmeans therefor are carried by the cap.

1 is the base here shown as in the form of a cup or receptacle havingits inner circumferential face threaded, the base also having adepending nipple 2 for connection with the part to be lubricated, thenipple having a passage 3 communicating with the interior of the base.

4 is the cap or closure for the base, the cap or closure being in theform of a receptacle inverted with respect to the base and having anexternally threaded barrel portion turning into the base 1, and a head 5having a flange overlapping the upper edge A spring pressed lockingmember, as a ball 6, is carried by the head 5 for locking the cap 4 fromturning move-- ment when it has been turned. to its full extent into thebase 1.

7 is a plunger movable in the barrel portion of the cap 4 and having a,threaded opening.

8 is a threaded stem carried by the head 5 of the cap 4 and extendingthrough the opening of the plunger 7, the stem 8. being Specification ofLetters Patent. Patented Apr, 3 0, 1191.2.

1911. Serial No. 642,746.

held from endwise movement, and being here shown as provided with acollar 9 engaging the inner face of the head and with a shoulder 10engaging the outer face of a part 11. associated with the head, theshoulder 10 being part of the handle 12 by means of which the stem isturned. The plunger 7 is held from turning movement with the stem sothat it will be moved upwardly or downwardly by the stem 8, byinterfitting means associated with the barrel portion of the cap4 andsaid plunger 7. Thebarrel portion of the'cap 4 is usually cylindrical orcircular in general outline and the interlitting means consists ofnon-circular portions which are usually provided for by forming thebarrel portion of the cap 4 with a lengthwise groove 13 and the plungerwith means extending into the groove. Preferably the plunger comprises aflexible member or washer14 formed of fabric or leather and interposedbetween upper and lower rigid sheet metal members or disks 15 and 16which are held at their inner margins by the hub or body of the plunger.As shown, the margin 17 of the washer 14 is turned downwardly to conformto the inner circumferential wall of the barrel portion of the cap 4.One of the disks 15 or 16, here shown as the upper disk 15, ispreferably provided with a tongue or projection 18 extending into andslidable in the groove 13 and the other of such disks as the lower disk16 is formed with a projection 19 which isbent downwardly at an angleto.the disk as shown in Fig. 1 and is formed with an offset or embossedportion 20 of less width than the projection 18 and the groove 13, forpressing a portion of the down-turned margin 17 of the flexible disk 14into such groove 13. r

This grease cup is particularly advantageous in that it includes nomovable part as a coiled spring or other movable device for holding theplunger from turning movebarrel portion, the plunger also including arigid member having means for pressing a portion of such margin into thegroove, and rotary means carried by the head of the receptacle forreciprocally .moving the plunger in the receptacle, substantially as andfor the purpose set forth.

2. A grease cup comprising a receptacle including a barrel portion and ahead, the barrel portion being cylindrical in general outline and havingan internal lengthwise groove, a plunger reciprocally movable in thereceptacle lengthwise thereof and comprising a flexible member having adownturned margin conforming to the inner surface of the barrel portion,and a rigid disk arranged beneath the central portion of the flexiblemember and having a rigid peripheral projection for pressing a portionof said downturned margin into thegroove, and rotary means carried bythe head of the receptacle for reciprocally moving the plunger in thebarrel portion, substantially as and for the purpose specified.

3. A grease cup comprising a receptacle including a barrel portion and ahead, the barrel portion being cylindrical in general outline and havingan internal lengthwise groove, 2. plunger reciprocally movable in thereceptacle lengthwise thereof and comprising a flexible member having adownturned margin conforming to the inner surface of the barrel portion,and a lower rigid disk having a downturned project-ion formed with anoffset portion of less width than the den thwise groove for pressing aportion of said downturne'd margin into the groove, and rotary means.carried by the head of the receptacle for reciprocally moving theplunger in the barrel portion, substantially as and for the purpose setforth.

4. A grease cup comprlsing a receptacle including a barrel portion and ahead, the barrel portion being cylindrical in general outline and havingan internal lengthwise groove, a plimger reciprocallymovable in thereceptacle lengthwise thereof and comprising a rigid portion formed witha projection for entering the groove, and a flexible portion of greaterdiameter than the barrel portion of the receptacle and having its marginbent to conform to the inner surface of the barrel portion, the plungeralso outline and having an internal lengthwise groove, a plungerreciprocally movable in the receptacle lengthwise thereof and comprisingan upper rigid disk formed with a projection entering the groove, aflexible member having a downturned margin conforming to the innersurface of the barrel portion, and a lower rigid disk having aprojection for pressing a portion of saiddownturned margin into thegroove, and rotary means carried by the head of the receptacle forreciprocally moving the plunger in the barrel portion, substantially asand for'the purpose specified.

6. A grease cup comprising a receptacle including a.barrel portion and ahead, the barrel portion being cylindrical in general outline and havingan internal lengthwise groove, a plunger reciprocally movable in thereceptacle lengthwise thereof and coniprising an upper rigid disk formedwith a projection entering the groove, a flexible member having adownturned margin conforming to the inner surface of thebarrel portion,and a lower rigid disk having a downturned projection formed with anoffset portion ofless width than the first-mentioned projection forpressing a portion of said downturned margin into the groove, and rotarymeans carried by the head of the receptacle for reciprocally moving theplunger in the'barrel port-ion, substantially as and for the purpose setforth.

In testimony whereof, I have hereunto signed my name in the presence oftwo attesting witnesses, at Auburn, in the county of Cayuga, in theState of New York, this 31st day of July, 1911.

GEORGE w. BOWEN.

Witnesses:

A. LOUISE RAMSAY, E. M. SALOMON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

